/Engine/Source/Runtime/Engine/Classes/Engine/Canvas.h
Calculate the length of a string, taking text wrapping into account.
static void StrLen ( const [UFont](API\Runtime\Engine\Engine\UFont) * InFont, const [FString](API\Runtime\Core\Containers\FString) & InText, float & XL, float & YL, bool bDPIAware, [FCanvas](API\Runtime\Engine\FCanvas) * InCanvas )